Abstract: As a vital component of ecosystem services (ESs), cultural services play a significant role in the context of national parks′ cultural ecosystem services (CESs). Enhancing CESs is vital for implementing the concept of ecological civilization, fulfilling people′s aspirations for a better life, and addressing the material and spiritual imbalance caused by industrialization. This paper thoroughly explains the concept and essence of CESs through an analysis of theoretical studies, empirical research, and the unique characteristics of national parks. In accordance with the individual needs and characteristics of national parks, a "Cognition-Emotion-Spirit-Belief (CESB)" four-in-one CESs framework was proposed. Based on existing research, this paper reviews four main topics related to CESs: functional evaluation, value measurement, embodied experience, and protection and utilization. The review was conducted systematically from both content and methodological perspectives. The findings suggest that future research should further clarify the connotation of CESs in national parks, establish a comprehensive evaluation system, uncover the mechanisms of the embodied experience of CESs, and innovatively apply modern technological tools. These research directions not only have the potential to reshape the understanding of CESs in national parks, but also expand relevant academic fields, thus providing scientific guidance for maximizing the ecological and economic benefits of national parks, and supporting their ecological protection and sustainable utilization.